package com.thread;


public class FramesTest {
    static   int count=0;
    static Object lock=new Object();
    public static void main(String[] args) throws InterruptedException {

        Thread t1=new Thread(()->{
            for (int i = 0; i < 5000; i++) {
                synchronized (lock){
                    count++;
                }

            }
        });
        Thread t2=new Thread(()->{
            for (int i = 0; i < 5000; i++) {
                synchronized (lock){
                    count--;
                }

            }
        });

        t1.start();
        t2.start();
        t1.join();
        t2.join();
        System.out.println(count);

    }


}
